Exhaust System Leak – GM – OEMDTC https://ww7.oemdtc.com GM Recalls, Technical Service Bulletins TSB's, Diagnostic & Repair Tips Fri, 06 Dec 2024 06:34:27 +0000 en-US hourly 1 https://ww7.oemdtc.com/wp-content/uploads/cropped-CEL-32x32.webp Exhaust System Leak – GM – OEMDTC https://ww7.oemdtc.com 32 32 Checking Exhaust System for Leaks, Malfunction Indicator Lamp (MIL) Illuminated – DTC P2C7A and/or P0421 Set – 2020-2023 Cadillac Chevrolet GMC https://ww7.oemdtc.com/18029/checking-exhaust-system-for-leaks-malfunction-indicator-lamp-mil-illuminated-dtc-p2c7a-and-or-p0421-set-2020-2023-cadillac-chevrolet-gmc/ https://ww7.oemdtc.com/18029/checking-exhaust-system-for-leaks-malfunction-indicator-lamp-mil-illuminated-dtc-p2c7a-and-or-p0421-set-2020-2023-cadillac-chevrolet-gmc/#respond Tue, 24 Jan 2023 00:40:34 +0000 https://ww7.oemdtc.com/?p=18029 GM - OEMDTC

Checking Exhaust System for Leaks, Malfunction Indicator Lamp (MIL) Illuminated – DTC P2C7A and/or P0421 Set – 2020-2023 Cadillac Chevrolet GMC

NHTSA ID Number: 10222807 Manufacturer Communication Number: 22-NA-168 Summary This bulletin provides diagnostic information when checking the exhaust system for leaks.   Condition Some customers may comment that the MIL is illuminated. Technicians may comment on one or more of the following DTCs set in the Engine Control Module (ECM):   Cause This condition may be caused ... Read more

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